Machine B will use more power.
Yes, a simple machine can create friction, and friction can create heat. You are converting mechanical energy to thermal energy.
Yes, any extra electrical load will cause the alternator to work harder which will cause the engine to have to work harder which will use more gas.
Because you have to use more energy sources to generate the power to use water Because you have to use more energy sources to generate the power to use water yeah
No, engines aren't the only things that has power. Anyone or anything can have power if they do work. Power is how quickly work is done and anyone can use power even if it isn't am engine
yes
If none of them work then the fuse is more than likely blown.
It is unsafe both for the computer and you to work on a computer while it is plugged into a power supply. If you mean simply to use the computer, then no, it is perfectly safe as long as the generator doesn't generate more power than the computer can use. (probably 120 V)
we harness the power by applying weight. the more weight there is then the more gravity there is
The elastic clause is the clause that Congress uses to get more power.
You divide work by time.
No, 12 volts means 12 volts. Anything less will not work and anything more will not work.